Description

The AS1326A/AS1326B are high-efficiency, high current, DC-DC step-up converters specifically designed for battery-powered wireless applications. Low quiescent supply current (65μA), high operating frequency (1MHz), and minimal external component requirements make these devices perfect for small hand-held applications.

Both devices use synchronous-rectified pulse-width modulation (PWM) boost technology to generate 2.5 to 5.0V outputs from a wide range of inputs, such as 1 to 3 alkaline/NiCd/NiMH cells or a single lithium-ion (Li+) cell.
Automatic powersave operation significantly improves efficiency at light-loads.

Continuous switching mode is available for applications requiring constant-frequency operation at all load currents. PWM operation can also be synchronized to an external clock to protect sensitive frequency bands in communications equipment.

Analog soft-start and adjustable current limit permit optimization of rush in current and external component size.